Pencil



F. w. DOLIER PENCIL Filed Jan. 26, 1923 Patented Sept. 9, 1924,.

EJNHTED FRANCIS \V. DOLIER, OF MOORESTOWN, NEW JERSEY.

PENCIL.

Application filed January 26, 1923. Serial No. 614,948.

To all whom it may concern:

Be it known that I, FRANCIS W. DOLmR, citizen of the United States,residing at Moorestown, in the county of Burlington and State of NewJersey, have invented certain new and useful Improvements in Pencils. ofwhich he following is a specification. I

This invention relates to pencils and pertains particularly to magazinepencils and to pencils for carrying extra lead.

()ne of the general objects of the invention is to provide a compactsimple device which will be durable and easily operated,

and at the same time inexpensive to manufacture.

The particular features of this invention include a novel type of leadholding clutch so designed that the lead may be fed through a roundsmooth bore, free from obstructions, and yet be held against loss. Thisclutch is yieldably adjustable to accommodate any size of lead and willhold the lead without damage to the lead.

Another particular feature includes the construction of the actuatingend piece and the shape and arrangement by which the rear end isassembled, and is an improvement on the construction illustrated in mycopending application Ser. No. 510,493.

Another feature of this invention relates to an arrangement of aseparable combined protecting cap and writing tip end for covering asplit finger clutch formed of the material of the pencil and fromwhichclutch the cap is spaced.

The general arrangen'ient of the operating mechanism is similar to thatnew form illustrated inmy Patent 1,436,581.

The. above features and advantages, and

other details of the invention are described and claimed in thefollowlng specification and claims, and illustrated in the accompanyingdrawing, in which:

Fig. 1 is an enlarged view taken sectionally and longitudinally throughthe pencil:

Fig. 2 is a side viewof the rear end piece removed from the barrel,illustrating the end of the spring actuating screw positioned in theslot in the end piece;

Fig. 3 is a view of the enlarged portion of the barrel with the outersleeve moved endwise, illustrating the detent member in its uncoveredposition, looking down on the construction shown in Fig. 1;

same diameter as the diameter of the shoul- Fig. 4 is a fragmentary viewof the end portion of the barrel showing a side sectional view of thedetent member;

Fig. 5 is a perspective view of the lead clutch showing the projectinglug extending radially from one side of the split tube;

Fig. 6 is a perspective view of the extreme forward writingtip,illustrating the rear threaded portion and a notched wall for therFeception of the projecting lug illustrated in 'ig. 5; V

Fig. 7 represents a pencil with a modifica tion of clutch for a writingtip end; and

Fig. 8 isa side view of the writing tip end illustrated in section inFig. 7.

Like parts in the various figures are identified by like referencecharacters.

Referring in detail to the drawing, 1 in dicates the barrel of a pencilof the type de scribed, enlarged considerably, in order to most clearlyillustrate the relative positions of the parts. 1 indicates the rear endof the barrel, and 1 indicates the front end of the barrel, and thefront end is provided with the threaded outer portion 1. The rear endportion of the barrel for inch or more of its length, is provided withan enlarged bore formed either as an enlargement of the wall 1, or as asection of tubing of larger size, secured to the end portionof thesmaller portion of the barrel, to provide a shoulder or projectingflange wall 1. A combined actuating and rear end member 2 is shown inits removed position in Fig. 2, and in Fig. 1 in its assembled positionwithin the enlarged bore of the rear end portion of the barrel 1. Therear end member 2 is provided with a reduced portion 2 which is adaptedto slide into the enlarged bore of the barrel '1, in a mannerhereinafter described and claimed as a telescopic rotatable connection.A right angle shoulder 2* is provided as a step between the portion 2and the reduced portion 2 and this wall 2 is adapted to abut against thebarrel end 1 when the parts are in the assembled position. The extremeforwardend of the part 2* is provided with an annular shoulder 2 which.has a larger diameter than the portion of the part 2 immediatelyadjacent thereto, thus providing a marked step. At the. rear portion ofthe part 2 and immediately adjacent the shoulder 2 is an annularshoulder portion 2 which has the der 2". The enlarged rear end portionof the barrel 1 has a first bearing surface adjacent the end 1; and asecond bearing surface, spaced inwardly from the end and the insidediameter of the enlarged end of the barrel is approximately the samediameter as the outside diameter of the shoulders 2 and 2 Thus, when theportion 2 is positioned within the enlarged end portion of the barrel,the shoulders 2 and 2 have a close fit with respect to the innersurfaces of the barrel, and the inner surfaces of the barrel immediatelyopposite the shoulders 2 and 2 serve as bearing portions for theshoulders, providing a snug and yet rotatable engagement. A slot 2 isprovided between shoulders 2 and 2 to extend length wise through thewall of the portion 2 for the reception of the actuating spring screwmember, as will be described. lt will be observed that the rear endportion of the slot 2 has higher side walls than the forward portion. Inother words, the material of the portion 2 is thicker adjacent theshoulder 2 than at the end next adjacent the shoulder 2. In themanufacture of this end portion, the tapered portion 2* may be formed byturning down a piece of solid material to cut away the taper and formthe sharp step at the shoulder 2 or the material 2 could be stamped ordrawn from a single piece of sheet material. in which case the walls ofthe slot 2* would probably be of approximately the same thickness. Thei1nportant feature is to provide the shoulders 2, 2 at the same heightand to provide side walls for the slot 9. extending rearwardly fromthe'lowest point of the slot and at the same distance from the center ofthe bore of the pencil so as to insure an engaging surface for the endof the actuating spring.

The front end of the barrel is equipped with a screw threaded fasteningcap 3, which has a rear portion 3 with threads adapted to engage thethreads 1 of the barrel. Tapering forwardly from the portion 3*, theinner walls of the cap are indicated at 3, and this tapered portionextends into a more sharply inclined part indicated at 3. From 3 andextending forwardly is a continuation of the inner wall, indicated at 3having a ver gradual inclination and terminating at a s .oulderextending at right angles to the bore of the barrel. 'lhr finalinclination of the wall 3 serves to guide the central pencil lead tubeinto place, and the wall 3 serves to limit the movement of the tubeforwardly within the wall 3*, as will be explained. The rear end of thecap 3 is provided with a right angle shoulder 3 having an abuttingengagement with the outer sleeve on the barrel, as will be explained.The extreme forward end of the cap 3 has an end surface at right anglesto the bore of the pencil, indicated at 3 Just forwardly of the Wall 3the material of the cap 3 projects inwardly providing an annularshoulder 3 which has a small central opening therethrough for thereception of a pencil lead, and through which opening the lead is tohave a relatively close sliding engagement. The here through the portion3 is understood to be perfectly smooth. From the end wall 3 the cap 8 iscut away inwardly to provide a threaded surface 3 terminating in aforward shoulder at the front end wall of the part 3*. This shoulderformed by the forward side of 3* serves to limit the inward movement ofone end of a particular clutch for leads. as will be described.

Detent means for holding the actuating end piece 2 in position at therear end of the barrel 1 is provided by a tongue memher 4 which isstruck up out of the materia'. of the enlarged rear end portion of thebarrel. The detent member is shown clearly in Figs. 3 and 4 as formedfrom the material of the barrel and extending as a continuation of thewall of the barrel from a point at l forwardly and terminating with afree end at 4". It will thus be seen that the detent member 4 isprovided with a slot around three sides of it. On either side of thetongue detent member l are small notches in the adjacent side walls ofthe barrel. The tongue l normally lies in the plane of the wall andtoward the tip 4P it is bent inwardl'v as indicated in F l. When thepart 9, assembled with the barrel. as illustrated in Fig. l the shoulder2 slides beneath the surface of the detent tongue t and finally 6r capesand the tongue end l" snaps down against the rear face of the shoulder 2and into the position illustrated in Fig. 1. lVhen it is necessary toremove the end 2 from the barrel a pin or piece of wire may be insertedin the notches 5 and projected beneath the tongue el to raise it fromengagement with the rear face of the shoulder 2 that the portion 2 andshoulder 2 may be withdra we from the barrel.

Means for covering the detent tongue l and its slot is provided by aslidable sleeve 6 which is designed to have a snug fit over the enlargedportion of the barrel and to extend between the end 1" and the shoulderif when the pencil is in the assembled pos tion. The slidable sleeve 6has an end wall indicated at 6 which has a central opening therein withwalls closely embracing the smaller portion of the barrel 1., thusproviding a shoulder at 6 which the shoulder i to limit the endwisemovement of the sleeve 6 when brought into its assembled position asshown in Fig. 1. A transparent. or other decorative sleeve, 7 ispositioned on the barrel 1 between the shoulders 63* and S. Preferablythe shoulders 6 and 3 have the same height so that with the addition ofthe sleeve 7 therebetween the pencil is provided with a smoothcylindrical exterior.

The writing tip end 8 of the pencil is illustrated in section in Fig. 1and in perspective in Fig. 6. The tip end 8 is preferably made ofextremely hard metal and is designed to withstand the relatively hardusage normally given the writing end of a pencil. The tip end 8 has arear face 8 adapted to abut the end face 3 of the cap 3. A reducedtubular portion on the rear end of the tip 8 is provided with threads 8designed to have threaded engagement with. the threads 3 at the forwardend of the cap 3. The extreme forward writing tip is indi cated at 8 andwithin this extreme writing tip end is a central bore having smooth sidewalls, and having a diameter approximately the same as that opposite theshoulder 55*. Just to the rear of the shoulder 3 and the bore thereofand extending rearwardly to the end of the tip 8 and thus forapproximately nine tenths of the length of the tip is a second bore forthe reception'of a split tube clutch for lead as will be described.Immediately to the rear of the threads 8 is a relatively smaller tubularportion 8 which is provided with a slot 8 in the wall thereof andextending inwardly from the extreme rear end. The clutch for holdingleads within the pencil point, so that the leads may be freely slidablyadvanced and yet held against accidental loss, is provided by means of atube 9 split throughout its length and formed of extremely thin springlike material having a bore approximately that of the bore for the lead.In Fig. 5 the clutch tube is shown in perspective, showing the two sidesof the split at 9 and at one end a radially extending lug 9 projectingas an extension of one of the walls. The lug 9 is adapted to slide intothe opening 8 when the split tube is inserted into the tip 8, and whenso assembled the extreme rear end of the tube 9 is flush with theextreme end of the tip 8, and both of these ends have abuttingengagement with the forward end of the shoulder 3 so that the tube 9 isheld'against endwise movement between the shoulders 7% and 8.

The operating mechanism of the pencil is substantially of the samegeneral arrangement as that illustrated in my Patent No. 1,436,851.central. partition 10 is secure y fixed within the barrel by brazingsolderin or other suitable means, and divides the inner bore of thebarrel into a front and a rear chamber, the front chamber being magazinefor extra leads and the rear chamber containing the actuating screw andthe propelling mechanism. The partition 10 has an axial opening 10 forthe reception of the guide tube which will be described.

' The guide tube 11 is rigidly mounted within the opening 10 by brazingand soldering and is thus fixed with respect to the barrel. projectingbeyond the end of the barrel 1 and adapted to engage the inclined wall 3and abut against the rear face of the shoulder 3 as at 3 The rearportion of the tube 11 on the opposite side of the partition 10 isindicated as provided with a slot through the wall thereof, this slotextending from the rear end of the guide tube substantially all of theway to the partition. The actuating helically coiled spring screw member12 substantially fills the diameter of the bore of the barrel andextends substantially the full length of the rear chamber. The springscrew member 12 is free to revolve within the circular walls of thebarrel; the latter portions of the spring 12 are loosely positionedwithin the barrel; and the coil or turns are positioned apart a distancesub stantially as great as the cross section of the material of thespring. The extreme rear end 12 of the spring 12 extends in a radialdirection into the slot 2 so that by turning the actuating piece 2 thescrew 12 may likewise be turned. In assembling the spring 12 in the endpiece 2 the spring 12 is positioned so that the end 1E2 may beintroduced into the next adjacent end of the slot 2 This may beaccomplished readily because the end of the slot is relatively near theend open ing. Then the spring 12 is moved endwise along within theportion 2 with the extreme end 12* confined in the slot 2 sothat finallythe end 12 is positioned at the opposite end of the slot from that atwhich it was introduced. This is obvious for the reason. that theprojecting end 124 must first be introduced into the slot before thespring 12 can be brought into alignment with the part 2 in its assembledposition. The actuated screw and plunger 13 is illustrated in Fig. 1 inits assembled position. This structure is peculiar in that the plungerrod is continuous and formed in one piece with the screw portion 13 Aright angle shoulder 13 extends from the straight rod 13 to the helicalturn of the actuated screw part 13". This member is inserted in the rearend of the barrel by fitting the rod 13 into the slotted guide tube 11so that the right angle shoulder 13* extends through the open slot andis prevented from turning by the side walls of the slot. By referring toF 1 it will be noted that the respective size and position of the turnsof the helical screw portions 12 and .13 are substantially the same andthat the turns of the member 13 substantially fill the spaces betweenthe adjacent turns of the member 12. The details ot the rod and springscrew members are described and claimed in my Patent No. 1,436,581.

A modified form of clutch for lead and The tube 11 has the extreme endextreme writing tip end is illustrated in 1 7 at the front end of (Y tia 7 ed portion is provided alignment Wliil'l the bore lied by thematerial of ard of the threads 14: fingers 15 having the a j ent fingersand so to press yieldably and resilthe bore to be occupied by a c ringerclutches were known for m QOliUITP but such clutches have rough or else.ieen ad ustably held 5 e part the pened in Fig. 7 an 'p end 16 1s anextreme rear a corresponding 2a in the inside of i or tapered. surfacefrom the 15. it

l .vriting end of the tip 1 'ing the side walls 16,

2% i e ericclil smooth and cylin- Ii 1 designed to closely hold a lead.This the ngers have unhindered freedom of action to lightly hold thelead against loss and at the same time the fingers a are protected bythe tip 16 which also provides a nooth bore for the lead at its extremeforward end.

in this pencil assembly, illustrated in Fig. l the outer surface of thepencil is smooth fron'i the tapered tip 8 rearwardly along the cap 3 tothe cylii'idrical portion of the barrel and thence to the extreme rearend i the sleeve In order to cover the actuating end piece it andprotect the eraserwhich normally would be carried by that piece, there.is provided an end cap 17 formed a cylindrical sleeve of material p"eferably having the same thickness as that of the sleeve 6. Thus theouter surface from the cap 3 rearwardlv is given a uniform cylindricalshape. On the inside of the pencil the inner wall of the barrel 1 andthe adjacent inner wall of the portion 2 extend as one so stantiallycontinuous barrel having the same size and shape so that the springscrew 12 may have an even confining surface throughout its length.

l claim:

l. in a pencil. a barrel having an end portion, an end piece having atelescopic and rotatable connection with said end portion, and detentmeans carried by said barrel and extending lengthwise thereof whollywithin tae outer contour of the wall of the end portion, said detentmeans being in releasable engagement with said end piece and permittingrelative rotation but not lengthwise movement of said end piece withrespect to the barrel when said detent means is in engagement with saidend piece.

2. in pencil, a barrel having an end portion, an end piece having atelescopic and rotatable connection with the inner wall of said endportion, detent means carried by said barrel and extending lengthwisethereof in the wall of the end portion, said detent means being inreleasable engagement with said end piece and permitting relativerotation but not lengthwise 'movement of said end piece with respect tothe barrel when said detent means is in engagement with said end piece,and a sleeve slidable lengthwise with respect to said barrel and adaptedto fit over said end portion and cover said detent means.

3. In a pencil, a barrel having an end portion, an end piece having atelescopic: and rotatl c connection with said end por ti ll, said barrelend portion having a slot therein, a detent member positioned in saidslot and having one end thereof fixedly secured to the wall of said endportion, said detent means being in releasable engagement with said endpiece and permitting relative rotation but not lengthwise movement. ofsaid end piece with respect to the barrel when said detent means is inengagement itll said end piece.

l. lln a pencil, a barrel having an end portion, an end piece having atelescopic and rotatable connection. with said end portion, said barrelend portion having a slol therein extending lengthwise of said barrel,and a detent member positioned in said slot and having one end fixedlysecured with respect to the wall of said slot and the other end movablein said slot, said detent means being in releasable engagement with saidend piece and pern'iitting relative rotation but not lengthwise movementof said end piece with respect to the barrel when said detent means isin engagement with said end piece.

5. In a pencil, a barrel having an end portion, an end piece having atelescopicand rotatable connection with said end portion, said barrelend portion having a slot therein, and a detent member struck from thematerial of the wall f said. end portion and positioned in said slot andhaving one nd thercoii secured to the wall of said end portion, saiddetent means being in releasable eng gement with said end piece andpermitting relative rotation but not lengthwise u'iovement of said endpiece with respect to the barrel when said detent means is in engagementwith said end piece.

6. In a pencil, barrel having an end portion, an end piece having atelescopic and rotatable connection with the inner wall id end portion,said barrel end portion having a slot therein, a detent member struckfrom the material of the wall of said end portion and positioned in saidslot and hav lng one end thereof secured to the Wall of llU said endportion, said detent means being in releasable engagement with said endpiece and permitting relative rotation but not lengthwise movement ofsaid end piece with respect to the barrel when said detent means is inengagement with said. end piece. and a. sleeve slidable lengthwise withrespect to said barrel and adapted to fit over said end portion andcover said detent means.

'7, In a pencil, a barrel having an end portion, an actuating end piecehaving a telescopic and rotatable connection with the inner wall of saidbarrel end portion, said inner wall having a first bearing surfaceadjacent the end thereof next to the extreme end of said end portion anda second. bearing surface spaced from said first surface and inwardlytherefrom, said actuating end piece having a first annular shoulderadapted to rotate within said first bearing surface and a second annularshoulder adapted torotate within said second bearing surface, said firstand said second surfaces being spaced apart and the wall of said barreltherebetween having a slot therein. and a detent member positioned insaid slot and lengthwise thereof wholly within the outer contour of thewall of said barrel and adapted to engage said second annular shoulder.

S. In a pencil, a barrel having an end portion. an actuating end piecehaving a telescopic and rotatable connection with the inner wall of saidbarrel end portion, said inner wall having a first bearing surfaceadjacent the end thereof next to the extreme end of said end portionanc. second bearing surface spaced from said first surface and inwardlytherefrom, said actuating end piece having a first annular shoulderadapted to rotate within said first bearing surface and a second annularshoulder adapted to rotate within said second bearing surface, saidfirst and said second annular shoulder being of the same diameter andspaced apart, and the outer surface of said actuating piece between saidshoulders being tapered gradually smaller from said first shouldertowardthe base of said sec ond shoulder. and adetent member mounted to engagesaid second shoulder.

9. In a pencil. a barrel having an end portion. an actuating end piecehaving a telescopic and rotatable connection with the inner wall of saidbarrel end portion, said inner wall having a first bearing surfaceadjacent the end thereof next to the extreme end of said end portion anda second bearing surface spaced from said first surface and inwardlytherefrom, said actuating end piece having a first annular shoulderadapted to rotate within said first bearing surface and a second annularshoulder adapted to rotate within said second bearing surface, saidfirst and said second annular shoulder being of the same-- diameter andspaced apart, and the outer Surface of said actuating piece between saidshoulders being tapered gradually smaller from said first shouldertoward the base of said second shoulder, and a detent member carried bysaid barrel end portion and normally yieldably extending lengthwise ofsaid barrci and wholly within the outer contour thereof and alongside-ofsaid tapered wall and toward said. second shoulder.

10. In a pencil, a barrel having a main portion and an enlarged portionadjacent one end and a shoulder at the point of-enlargement, saidenlarged portion having a slot therein, and a. slida'ble' sleeve on saidbarrel having a main portion adapted to closely encircle said enlargedportion and having a shoulder closely encircling said main barrelportion and adapted to abut against said shoulder on said barrel.

11. In a pencil, a barrel having a main portion and an enlarged portionhaving a slot therein, a slidable sleeve on said barrel" having encirclesaid main barre-l portion adapted to abut against said shoulder on saidbarrel, a removable end piece on the end of said be rel opposite to saidenlarged end and providing a shoulder projecting from said barrel, andan outer casing slidably remov able from said barrel and fitting betweenand. retained by said shoulder on said end piece and said shoulder onsaid sleeve.

12. In a pencil, a rigid barre] having a bore lengthwise therein forlead and a clutch member within said barrel in alignment with said bore,said clutch membercomprising a tube split lengthwise-and resilientlyexpansible to accommodate lead of different sizes, said barrel having arecess therein formed as an enlargement of the bore, and a projectinglug on said clutch tube adapted to fit into said recess and preventrelative rotation of the tube and barrel.

13. In a pencil, a barrel having a writing end with a bore for leadtherein, a first shoulder extending from the wall of said barrelcentrally and terminating at the lead bore, an extreme forward writingtip end having a round bore therein in alignment with the bore of saidbarrel, a second shoulder within said tip end adjacent said borethereof, and a clutch for holding lead positioned within said barrel inalignment with the bore thereof, said clutch comprising a tube splitlengthwise throughout its length and expansible resiliently toaccommodate lead of different sizes.

M. In. a pencil, a barrel having a writing end with a bore for leadtherein, a first shoulder extending from the wall of said barrelcentrally and terminating at the lead bore, an extreme forward writingtip end having a round bore therein in alignment a main portion adaptedto closely.

with the bore of said barrel, a second shoulder within said tip endadjacent said bore thereof, and a clutch for holding lead positionedbetween and held by said first and second shoulders and in alignmentwith said bore, said clutch comprising a tube split lengthwisethroughout its length and expansible resiliently to accommodate lead ofrilifi'erent sizes.

15. In a pencil, a barrel having a writing end with a bore for leadtherein, a first shoulder extending from the wall of said barrelcentrally and terminating at the lead bore, an extreme forward writingtip end having a round bore therein in alignment with the bore of saidbarrel, a second shoulder within said tip end adjacent said borethereof, and a clutch individually and separately operable independentlyof said barrel. and said tip for holding lead and positioned between andheld by said first and second shoulders and in alignment with said boreand noni'otatable with respect to said bore, said clutch comprising atube split lengthwise throughout its length and expansible resilientlyto accommodate lead of different sizes.

16. In a pencil, a barrel and a removable tip therefor, and a clutch foryieldingly holding lead and located within said tip, said tip having anextreme end provided with a first round bore to closely embrace lead andalso a second and larger and relatively longer bore, said clutch beingpositioned in said second bore against relative rotation with respectthereto.

17. In a pencil, a barrel and a removable tip therefor, and a clutch foryieldingly holding lead and located within said tip, said tip having anextreme end provided with a first round bore to closely embrace lead andalso a second and larger and relatively longer bore, said clutch beingpositioned in said second bore against relative rotation with respectthereto, said clutch comprising a tube split lengthwise and resilientlyexpansible to accommodate lead different sizes.

18. In a pencil, a barrel, and a removable tip having at one end athreaded sleeve por tion adapted to be brought into threaded connectionwith the adjacent end portion of said barrel, a first bore extendinginwardly within said tip from said threaded end and terminating in ashoulder and continued to the extreme forward end as a secondrelaliveli; smaller bore. said threaded pcrri u having a recess thereinformed as an enlargement of the bore, and a clutch member within saidremovable tip in alignment with said bore, said clutch member comprisinga tube split lengthwise and expansible siliently to accommodate lead ofdifferent sizes, and a projecting lug on said clutch tube adapted to fitinto said recess and prevent relative rotation of the split tube withrespect to the tip.

19. In a pencil, a barrel having a bore therein, an end piece intelescopic rotatable engagement with said barrel and having a bore ofthe same diameter as the bore of said barrel and in alignmenttherewith,v and a coiled spring within both bores and capable ofslidable endwise movement within both bores.

20. In a pencil, a barrel having a bore therein, an end piece intelescopic rotatable engagement with said barrel and having a bore ofthe same diameter as the bore of said barrel and in alignment therewith,the walls of the. bores of said barrel and said and piece extending as asubstantially continuous cylindrical surface, and a coiled springpositioned within both said bores and capable of a sliding endwisemovement within the bore of said end piece and capable of a rotarymovement within the bore of said barrel.

In testimony whereof I aflix my signature,

